They captured three machine guns.

他们缴了三挺机枪。

《新英汉大辞典》

Above the chimney were sundry villainous; old guns, and a couple of horse-pistols: and, by way of ornament, three gaudily painted canisters disposed along its ledge.

壁炉台上有杂七杂八的老式难看的枪，还有一对马枪；并且，为了装饰起见，还有三个画得俗气的茶叶罐靠边排列着。

youdao

Antiaircraft guns downed three bombers.

高射炮击落了三架轰炸机。

youdao

He says one man, wearing civilian clothes, was carrying three guns and was shooting at everyone he saw.

VOA: standard.2009.03.30

At Fort Sumter, Major Robert Anderson and his men waited three hours before firing back at the Confederate guns.

VOA: special.2009.08.13

Three guns were recovered near the gunman's body: a Glock, a Sig Sauer and a .223 Bushmaster rifle.

WSJ: Dozens Killed in Newtown, Connecticut, School Shooting

At their trial the court heard three guns were found in the car.

BBC: Azelle Rodney death: Police 'shot suspect six times'

Three guns used by the two underage killers were purchased by 18-year-old Robyn Anderson at a Colorado gun show to avoid a background check.

CNN: Colorado governor to sign 3 gun control bills